翼吊低平尾飞机尾迹测量研究  

Survey on Wake of Wing-hung and Low-HTP Airplane and Investigation of Longitudinal Moment Characteristic

作　　者：周星[1] 白峰[1] 

机构地区：[1]中国商用飞机有限责任公司上海飞机设计研究院,上海201210

出　　处：《航空工程进展》2016年第2期153-157,共5页Advances in Aeronautical Science and Engineering

摘　　要：平尾是影响全机纵向力矩的首要部件,翼吊低平尾飞机平尾处的流场受到翼身组合体尾迹的影响。为了摸清尾迹的特点,利用七孔探针测量平尾处的动压及下洗角,得到平尾处流场动压损失以及下洗角随飞机迎角变化的气动特点。结果表明:在接近最大升力系数时,平尾处流场动压损失严重,降低了平尾的气动效率,导致全机的纵向力矩失稳。研究结果对大飞机的气动特性优化工作具有指导意义。Horizontal tail plane（HTP）is the primary component of aircraft,which influences the longitudinal moment of whole aircraft.The low HTP is affected by the wake of wing-and-fuselage combination in the winghung aircraft.In order to find out the characteristics of the wake,by using the seven hole probe the down wash angle and dynamic pressure are measured.The change of down wash angle and dynamic pressure with the changing of the attack angle can be gained.Results show that the loss of the dynamic pressure of the HTP is severe near the critical angle of attack.It can decrease the efficiency of HTP and cause the instability of longitudinal moment.The research result could be used to optimize the aerodynamic characteristics.

关 键 词：翼吊 低平尾 七孔探针 尾迹 纵向力矩 稳定性 

分 类 号：V211.73[航空宇航科学与技术—航空宇航推进理论与工程]